Claude Sonnet 4.6 vs DeepSeek V4 Flash 0731 Fast
anthropic/claude-sonnet-4.6 · deepseek/deepseek-v4-flash-0731-fast
As of November 4, 2026, Claude Sonnet 4.6 is the cheaper API on UberLLM: $0.1109 per million input tokens and $0.5544 per million output, versus $0.2660 / $0.5320 for DeepSeek V4 Flash 0731 Fast, about 5% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose Claude Sonnet 4.6 to cut cost; choose DeepSeek V4 Flash 0731 Fast when its capabilities fit your task better.
Claude Sonnet 4.6 vs DeepSeek V4 Flash 0731 Fast, side by side
| Spec | Claude Sonnet 4.6 | DeepSeek V4 Flash 0731 Fast |
|---|---|---|
| Price · input / 1M | $0.1109 | $0.2660 |
| Price · output / 1M | $0.5544 | $0.5320 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 64,000 | 32,768 |
| Input modalities | text, image | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | Yes | — |
| Reasoning | Yes | Yes |
| % off list | 96.3% off | 24% off |
| First token, median (7 days) | — | 2.5 s (469 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 4, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
Claude Sonnet 4.6 vs DeepSeek V4 Flash 0731 Fast — FAQ
Is Claude Sonnet 4.6 or DeepSeek V4 Flash 0731 Fast cheaper?
Claude Sonnet 4.6 is cheaper on a blended token mix, by about 5%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between Claude Sonnet 4.6 and DeepSeek V4 Flash 0731 Fast?
Claude Sonnet 4.6: $0.1109 in / $0.5544 out per 1M tokens. DeepSeek V4 Flash 0731 Fast: $0.2660 in / $0.5320 out per 1M tokens. That's roughly a 5% blended difference. Prices are live; UberLLM adds no fee.
Can I use both Claude Sonnet 4.6 and DeepSeek V4 Flash 0731 Fast with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.